Summative Scoring Methodology


One of the challenges of developing a new evaluation system is determining how to reach a final performance score after sifting through all of the evidence and performance in each eight of the criteria. OSPI will be leaning on the work of the pilot sites and the TPEP Steering Committee to determine the best possible method to get to a final summative score. Per the passage in ESSB 5895 quoted below, OSPI has until December 1st, 2012 to adopt rules to provide a common methodology for getting to the final score and adopt rules describing level of the performance ratings.

(c) The four-level rating system used to evaluate the certificated
classroom teacher must describe performance along a continuum that
indicates the extent to which the criteria have been met or exceeded.
((When)) The summative performance ratings shall be as follows: Level
1 – unsatisfactory; level 2 – basic; level 3 – proficient; and level 4
– distinguished. A classroom teacher shall receive one of the four
summative performance ratings for each of the minimum criteria in (b)
of this subsection and one of the four summative performance ratings
for the evaluation as a whole, which shall be the comprehensive
summative evaluation performance rating. By December 1, 2012, the
superintendent of
public instruction must adopt rules prescribing a
common method for calculating the comprehensive summative evaluation
performance rating for each of the preferred instructional frameworks,
including for a focused evaluation under subsection (12) of this
section, giving appropriate weight to the indicators evaluated under
each criteria and maximizing rater agreement among the frameworks.

(d) By December 1, 2012, the superintendent of public instruction
shall adopt rules that provide descriptors for each of the summative
performance ratings, based on the development work of pilot school
districts under subsection (7) of this section. Any subsequent changes
to the descriptors by the superintendent may only be made following
consultation with a group broadly reflective of the parties represented
in subsection (7)(a) of this section.

Summative Scoring Overview Video